<template>
    <div>
        <template v-for="item in this.menuList">
            <el-submenu :disabled="item.disabled" :index="item.id+''" :key="item.id+''" v-if="item.children.length>0">
                <template slot="title">
                    <i :class="item.icon"></i>
                    <span slot="title">{{ item.menuName }}</span>
                </template>
                <MenuTree :menuList="item.children"></MenuTree>
            </el-submenu>
            <el-menu-item
             v-else
             :disabled="item.disabled"
             :index="item.url+''"
             :route="item.url+''"
             @click="savePath(item.url)"
             :key="item.id"
             style="padding-left: 50px;"
             >
                <i :class="item.icon"></i>
                <span slot="title">{{ item.menuName }}</span>
            </el-menu-item>
        </template>
    </div>
</template>

<script>
export default {
    name: 'MenuTree',
    props: ['menuList'],
    methods:{
        //保存激活路径
        savePath(path) {
            window.sessionStorage.setItem("activePath", path);
            //调用Main.vue的activePath
            this.activePath = path;
        }
    }
}
</script>

<style scoped>
    /*实现了一个溢出处理*/
    .el-menu--collapse span,
    .el-menu--collapse i.el-submenu__icon-arrow {
        height: 0;
        width: 0;
        overflow: hidden;
        visibility: hidden;
        display: inline-block;
    }
</style>